Door lock



P 1.949- J.IH. MILLIGAN 2,482,926

DOOR LOCK Filed Nov. 2, 1946 '5 Sheets-Sheet 2 with a cylindrical flangeit which forms a hub or bearing on which the outer knob is supported.

The outer knob has a cup-shaped bearing member l5 secured to its innerend by means of screws l3, and the skirt or side wall portion ll of thebearing member l3 encircles and has a supporting bearing on the flange il. The bearing member i5 is held in place on the flange IE by an annularmember is which is secured to the door by screws l3 and the outer endportion of which encircles the skirt ll of the bearing member l5, saidmember it being provided with an inwardly facing shoulder 23 whichengages an outwardly facing shoulder 2i with which the skirt portion llof the bearing member is provided. These shoulders 2t and 2i hold thebearing member against the end 01' the flange i i and prevent any axialmovement of the outer knob '5.

The outer knob 5 is provided with a lockin member, herein shown in theform of a disk 22 which is located within the flange i i and isconnected to the outer knob to turn therewith but which is capable ofaxial movement relative thereto. For this purpose the bearing member l5is provided with one or more pins 23 which extend through openings 23formed in the locking disk 22, and since the bearing member I5 is rigidwith the outer knob 5, the engagement of the pins 23 in the openings 22connect the locking member 22 to the outer knob for turning movementtherewith but permit the desired axial movement thereof. The bearingflange I4 is provided on its inner face with a rib 25 that is providedwith a notch 26, and the locking member 22 is formed on its peripheraledge with one or more locking projections 21 adapted to be received inthe notch 23. In the construction herein shown, the rib 25 is providedwith two notches '28 that are oppositely disposed, and the lockingmember 22 has two oppositely disposed locking projections 21.

Means are provided whereby normally the looking disk 22 will bepositioned so that the locking projections 21 will occupy the notches 23and thereby said locking disk is locked from turning movement, and sincesaid locking disk is mounted on the pins 23, the outer knob will belocked from turning movement so long as the locking disk 22 is in aposition in which the locking projections 21 occupy the notches 26.

Means are provided whereby normally the locking disk 22 will have thislocked position. As herein shown, said disk 22 has rigid therewith asleeve portion 23 which extends through the end of the bearin member l5and into an axial chamber 29 with which the outer knob 5 is provided,the outer end of said sleeve member 28 being closed by a screw-threadedplug 30 which is screwed into the end of the sleeve portion 28. The plug30 is formed with a head 3i somewhat larger in diameter than the sleeve28, and a spring 32 encircles the sleeve 28 and is confined between thehead 3i and a loose sleeve 33 which encircles the sleeve portion 28 andis located in the opening in the bearing member IS. The loose sleeve 33has at its left-hand end a flange 330. (see Fig. '7) that normallyengages the left-hand face of the bearing member l5 as clearly seen inFig. 4, so that the tendency of the spring 32 is to apply to the head 3|ofthe screw 33 and thereby to the locking disk 22, a force urging saidlocking disk toward the left. The spring 32 is so tensioned that itnormally holds the locking member 22 in the position shown in Fig. 1,wherein the projections 27 are located in the notches 28 of the' rib 25.

The outer knob 5 is provided with key-controlled means by which thelocking flange 22 can be moved axially to the right from the positionshown in Fig. 2 into a position at one side of the rib as seen in Fig.4, in which position the locking projections 21 are freed from thenotches 23 with the result that the outer knob 5 will be unlocked andcan be turned.

The construction herein shown is also such that when the locking disk 22is thus moved into unlocked position, it becomes coupled to the spindle3 so that the spindle can be turned to open the door by the thenunlocked outer knob.

The key-controlled means for thus unlockin the outer knob comprise abarrel element 34 located within the outer knob 5 and a key plug 35mounted in the barrel element for turning movement, said key plug havingthe usual key slot 36 and being normally locked to the barrel element bythe usual tumbler pins 31 and spring-pressed iollower pins 38.

When a properly out key 99 is introduced into the key slot 36 thereby toline up the tumbler pins, the key plug becomes unlocked and can be movedinwardly within the barrel 34 from its outer position shown in Figs. 1and 2 to its inner position shown in Fig. 4. Such inward movement of thekey plug 35 operates to shift the locking disk 22 from its lockedposition shown in Fig. l to its unlocked position shown in Fig. 4, inwhich the latter position it is coupled or clutched to the spindle 3 bymeans of the following mechanism.

Interposed between the key plug 35 and the plug 38 at the outer end ofthe sleeve 28 is a disk 39 having a stem 40 which extends through anopening in the plug 33. This disk element is acted on by a spring 4|which bears at one end against the bearing member [5 and at the otherend against said disk element 33, said spring holding said disk elementyieldingly against the end or" the key plug and applying sufiicienttension thereto to prevent the follower pins from binding when the keyis inserted into the key slot.

When the key plug is moved inwardly into the position shown in Fig. l,it forces the disk element 39 against the plug 33 and thereby moves thesleeve portion 28 and the locked disk 22 inwardly, such movementcarrying the locking projections 21 out from the notches 28 of the rib25 thereby unlocking the outer knob. During such inward movement of thesleeve 28 and disk 22, the spring 32 will be compressed since one endthereof bears against the head 3! of the plug 38 which is screwed intothe sleeve 28 and the other end bears against the flange 33a of thesleeve 33, which flange engages the bearing member l5.

As stated above, this inward movement of the locking disk 22 clutches orcouples it to the spindle 3. For this purpose, the spindle 3 has at itsouter end a coupling flange 32 provided with openings 33 adapted toreceive clutching or coupling pins 44 with which the locking disk 22 isprovided.

When the locking disk 22 is in its locked position shown in Fig. 1, thepins 34 will be disconnected from the coupling flange 42, but the inwardaxial movement of the locking member 22 necessary to unlock it from therib 25 will bring the pins Ml into coupling engagement with the openings43 in the coupling flange 42.

The door can thus be unlocked by inserting a proper key 99 into thekeyslot 36 to unlock the keyiplug and. then by pushing the key and key pluginwardly into the position shown in Fig. 4, with the result thatthelocking member 22 is released from the locking rib 25 and'coupled to thespindle 3. The turning of the unlocked outer knob will thus cause thespindle 3 toturn thereby withdrawing the latch 2 from the keeper in thedoor frame.

Means are'provided for holding the key plug in its inner position shownin Fig. 3 while the outer knob '5 is being manipulated. For this purposethe key plug is provided witha pin 45 which is normally received inagroove 46 with which the barrelelement s4 is provided. When the keyplug is :moved inwardly into the position shown insFig. 2 for unlockingthe outer knob, the pin 45 is carried out of the slot at into a recess41 formed in the inner end of the barrel 34. By turning the key 9i andthe key plug slightly after the .pin 45 has been moved out of the slot@8 as'shown in Fig. 5,'the pin it will be moved against the inner wallof the recess M at one side of the slot thereby holding the plug in itsinward position and holding the locking disk 22 in its unlocked positioncoupled to the spindle.

So long as the key remains in the key slot as shownin Fig. 5, the outerknob will remain unlocked and coupled to the spindle and will thusremain operative for opening the door.

To. withdraw the key, it is necessary to turn the key plug to bring thepin 45 into register with the slot 4% and when this has been done, theplug may be moved outwardly into the position shown in Fig. Zby pullingon thekey 99, such movement of the plug being assisted by the springsdiand 42. When the key plug is back in the outer position shown in Figs. 1and 2, the tumbler pins and follower pins 32 and t8 automaticallylock'the plug.

As stated above, the spring 32. is so. tensioned that when the key plug35; is restored to its normal outer position shown in Fig. 2,said'spring acting on the flange 3311 will return the disk 22 to itscentral locked position shown in Fig. 1-.

My improved lock is also constructed so that the outer knob can beunlocked and coupled to the spindle by proper manipulation of the innerknob e without the use of a key. The inner knob i and the spindle 3 arecapable of axial movement from an outer position shown in Fig. 1' to. aninner position shown in- Fig. 2. When the inner knob and the spindle 3are thus moved into their inner positions, the coupling flange 42 on thespindle is brought into coupling engagement with the pins it of thelocking member and the engagement of the coupling flange 42' with thelocking flange 22 pushes. the latter outwardly a sufiicient distance towithdraw the locking projections 2? from the notches 25 in the rib 25and to locate the locking disk 22 on the outside of the rib 2 5 as shownin Fig. 2. The outer knob is thereby unlocked so that it can be turnedand it is also coupled to the spindle so that the door can be unlockedand opened from the outer knob without theuse of a key. 7

Attached to the inside of the door by screws-48 is a rose element 59which encircles the Eouar id at the inner end of the inner knob 4. Thisroseelement is provided with two annular grooves 55 and iii which formbetween them a rib-'52. Said rib is formed with one or more notches oropenings 53 and the collar i-El' is provided with a. projection 54adaptedtooperate in either one of thegrooves 5t and 51.

Normally the innerknob. 4 and thespindl'e are positioned so'that'theprojection 54'is in the outer groove 50 thereby placing the couplingflange 42 on'the spindle in the position shown in Figs. 1 and 4.

When it is. desired to unlock the outer knob from the inner knob, thelatter is turned to bring the projection 54 in line with the notch 53and then the inner knob with its spindle is pushed inwardly into itsinner position shown in Fig.2 thereby to brin the projection 54 intoregistration with the inner groove 5 I. Thisinward movement of the knoband the spindle serves to couple the coupling flange 42 to the lockingmember 22 and also serves to move the locking member 22 outwardly into aposition on the outer side of the rib 25 thereby unlocking saidouter-knob. By turning the inner knob slightly, the projection 54 iscarried out of'registration with the slot 53 and the inner knob willthen be held in its inner position byengagement with the rib 54. Whenthe parts have been thus adjusted, then the outer knob is unlockedandcoupled to the spindle so that a person may'open the door simply byturning the outer knob and'without the use of a key. This makes itpossible for a person within a room to set the lock so that anyone canenter the room without having to use a key for this purpose.

In the door lock construction shown in 7 l to 4, the spindle is free atall times to be turned by't'he inner knob and can be turned by the outerknob when the latter is unlocked and clutched to the spindle either bythe key-controlled means as-shown in Fig. 4, or by shifting theinnerknob inwardly into the position shown in Fig. 2. i

In Figs. 12 to 16 there is shown a different embodiment of the inventionin which the spindle is normally free to be turned by the inner knob butis locked against turningmovement by shifting-the inner knob in an axialdirection, thereby making it impossible to open the door from the outerknob even when the outer knob is unlocked by means of the key.

In the construction shown in Figs. 12 to 16, the

spindle is indicated at 3a and it is adapted to be clutched to theouterknob when the latter'is unlocked by the means illustrated in Figs. 1 to5. a In Figs. 12 to 16 the inner knob is shown at M and it'ijs formedwith a hub portion 66 within which is received a sleeve 6| that isprovided with a square opening 62 that fits'the square spindle 3a sothat the sleeve 51 and the spindle must always rotate as a unit. Thesleeve BI is formed at its inner end with a flange 63 which normallyengages the inner end of the hub 60 of the inner knob. The flange 63'-is provided with an outwardly extending locking projection 64 which isnormally received in a groove 65- formed on the inside-of the rose 66.

The hub 60' is alsoprovided with an 'outwarclly extending projection $1which when the parts arein' normal position shown in Fig. 12 registerswith the projection 64 and is also located in the groove 65'.

The rose '65; is provided with an interior rib 89 which is: formed witha passageway ll] of a size to receivestheprojections 64% and G l.

The inner knob 4a is mounted for axial move:- ment from the normalposition shown in Fig.,l2 to a spindle-locking. position shown in Fig.13, and-means. areprovided whereby whenthe knob isimoved'. from. itsnormaliposition to? its spindlelooki'ng position, they locking;projection. 54* onxthe flange fis: is moved. into: the passageway 11]?in. the rib 59 whilezthe projectionti: on. the hub it'll is 7 carriedclear through said passageway into a position outside of the rib 69.

When the parts are in this position, the sleeve El will be locked fromturning movement by reason of the fact that the projection 64 thereonoccupies the passageway Hi, and thereby the spindle So will be lockedfrom turning movement. This locking of the spindle will be effectiveeven though the outer knob is unlocked by the key and has been clutchedto the spindle as shown in Fig. 4. The construction shown in Figs. 12 to18 therefore provides means by which a person on the inside of the room,may, by manipulating the inner knob, lock the spindle from turningmovement and thereby prevent anyone from opening the door by means ofthe outer knob even though such person has the proper key with which tounlock the outer knob.

The spindle 3a is shown as provided on its end with a head H which isreceived in an axial recess 12 with which the inner knob 4a is provided.A sprin 73 encircles the spindle and is confined between the head H andthe inner end of the recess 12, said spring normally holding the partsin the relative position shown in Fig. 12.

The sleeve 6| is provided with a pin or projection 14 and the hub 69 isprovided with a slot 15 and with a notch 16 in the outer wall of theslot.

When the parts are in normal position shown in Figs. 12 and 14, the pin14 occupies the notch 16 and thus the inner knob is locked to the sleeveso that turning movement of the said knob will turn the sleeve and thusturn the spindle, which at such time is unlocked by reason of the factthat both the projection 64 on the sleeve and the projection 6'! on thehub 60 of the outer knob are occupying the inner groove 65.

The inner knob is provided with a groove 11 in which is located a thrustpin 18, said pin being confined between the outer end of the sleeve BIand the head H on the spindle. In this embodiment the spindle is heldfrom axial movement toward the right, and, as a result, when the innerknob is moved axially of the spindle from its normal position shown inFig. 12 into its spindlelocking position shown in Fig. 13, the sleevewill move with the knob outwardly until the outer end of the pin 18 isbrought up against the head H on the spindle. This movement of the knoband sleeve is suflicient to carry the projection 64 on the sleeve intothe passageway E of the rib 69. When the pin 18 has thus been movedagainst the head ll of the spindle, then said pin can move no furtherand consequently the sleeve 6| is prevented from further axial movement.

A continued further axial movement of the inner knob 3a, however,carries the pin 14 out of the notch 16 into the slot 15, this movementbeing sufiicient to carry the projection 61 on the hub 69 clear throughthe passageway and outside of the rib 69. The inner knob may then beturned slightly to carry the projection 67 in front of the rib 63thereby locking the inner knob in its spindle-locking position as seenin Fig. 15. The extent of the turning movement of the inner knob forthis purpose depends upon the length of the slot 15.

I claim: a

1. A door lock comprising a latch-releasing spindle extending throughthe door, an inner knob fast on said spindle, a knob-supporting memberfixedly secured to the outer side of the door, an outer knob rotatablymounted on the knob supporting member, a knob-locking member movableaxially relative to the outer knob but connected thereto to rotatetherewith, said knoblocking member and knob-supporting member havingcooperating means locking the knob-locking member and thus the outerknob from turning movement when said knob-locking member is in oneposition, said spindle and inner knob being movable axially from anouter to an inner position, and means rendered operative by the movementof said inner knob and spindle into their inner positions to shift theknob-locking member axially from its locked position to an unlockedposition and to clutch said knob-locking member to the spindle.

2. A door lock comprising a latch-releasing spindle extending throughthe door, an inner knob fast on said spindle, a knob-supporting memberfixedly secured to the outer side of the door, an outer knob rotatablymounted on the knob-supporting member, a knob-lockin member movableaxially relative to the outer knob but connected thereto to rotatetherewith, said knob locking member and knob supporting member havingcooperating means locking the knob-locking member and thus the outerknob from turning movement when said knob-locking member is in oneposition, said spindle and inner knob being movable axially from anouter to an inner position, means rendered operative by the movement ofsaid inner knob and spindle into their inner positions to shift theknob-locking member axially from its locked position to an unlockedposition and to clutch said knob-locking member to the spindle, andmeans for retaining the inner knob and spindle in their inward positionwhile permitting turning movemerit thereof.

3. A door lock comprising a latch-releasing spindle extending throughthe door, an inner knob mounted on the innerend of said spindle, aknob-supporting member fixedly secured to the outer side of the door, anouter knob rotatably mounted on said knob-supporting member, aknob-locking member connected to the outer knob to rotate therewith andmovable axially in either direction from a central locked position to anunlocked position, means for locking said knob-locking member fromturning movement when in its central position, key-controlled means tomove the knob-locking member axially in one direction from its centrallocked position to an unlocked position and to clutch said knob-lockingmember to the spindle, thereby rendering the outer knob operative toturn said spindle, said inner knob and spindle being movable axially,and means rendered operative by an axial movement of the spindle andinner knob to move the knob-locking member axially in the otherdirection from its central locked position to an unlocked position andto clutch said knob-locking member to the spindle thereby to unlock theouter knob and render it operative to open the door.

4. A door lock comprising a latch-releasing spindle extending throughthe door, an inner knob mounted on the inner end of said spindle, aknob-supporting member fixedly secured to the outer side of the door, anouter knob rotatably mounted on the knob-supporting member, aknob-locking member connected to the outer knob to rotate therewith andmovable axially in either direction from a central locked position to anunlocked position, said knob-supporting member and knob-locking memberhaving cooperating means for locking the knob-locking member fromturning movement when it is in its central position, key-controlledmeans to move the knob-locking member axially in one direction from itscentral locked position to an unlocked position and to clutch it to thespindle thereby rendering the outer knob operative to turn said spindle,said inner knob and spindle being movable axially, and means renderedoperative by an axial movement of said spindle and inner knob to movethe knob-locking member axially in the other direction from its centrallocked position to an unlocked position and to clutch said knob-lockingmember to the spindle thereby to unlock the outer knob and render itoperative to open the door.

5. A door lock comprising a latch-releasing spindle extending throughthe door, an inner knob mounted on the inner end of the spindle, aknob-supporting member secured to the outer side of the door andpresenting a cylindrical flange co-axial with the spindle, an outer knobmounted for turning movement on said cylindrical flange, a knob-lockingdisk located within said cylindrical flange and movable axially ineither direction from a central locking position, means connecting saiddisk to the outer knob for turning movement therewith, said locking diskand cylindrical flange having cooperating means to lock the disk andtherefore the outer knob from turning movement when said disk is in itscentral position, means normally holding said disk in such centralposition, said disk being free for turning movement when moved eitherinwardly or outwardly from said central position, key-actuated meansassociated with said outer knob and moving said knob-locking disk fromits central locked position to its inner unlocked position, means forclutching said disk to the spindle when in such inner unlocked position,said inner knob and spindle being movable axially and said spindlehaving means associated therewith to move the knob-locking disk into itsouter unlocked position and to clutch said disk to the spindle when theinner knob is moved axially.

6. A door lock comprising a latch-releasing spindle adapted to extendthrough a door, an inner knob mounted on said spindle, an outer knobmounted on the outside of the door, a

knob-locking member movable axially relative to the outer knob between alocking position and an unlocked position but connected to the outerknob to rotate therewith, means cooperating with REFERENCES CITED Thefollowing references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 604,951 Anderson et al. May 31,1898 1,681,187 Keesling Aug. 21, 1928 1,769,314 Rymer July 1, 19301,783,785 I-Iabicht Dec. 2, 1930 1,810,909 Ellingson June 23, 19311,845,963 Ellingson Feb. 16, 1932 2,185,863 Miller Jan. 2, 1940

